639659000

素因数分解:

$2^3\times 5^3\times {\mathrm{17}}^1\times {\mathrm{191}}^1\times {\mathrm{197}}^1$

素因数の和:426

約数の個数: 128

約数和(自身を含む): 1601233920

約数和(自身を除く): 961574920

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 25, 34, 40, 50, 68, 85, 100, 125, 136, 170, 191, 197, 200, 250, 340, 382, 394, 425, 500, 680, 764, 788, 850, 955, 985, 1000, 1528, 1576, 1700, 1910, 1970, 2125, 3247, 3349, 3400, 3820, 3940, 4250, 4775, 4925, 6494, 6698, 7640, 7880, 8500, 9550, 9850, 12988, 13396, 16235, 16745, 17000, 19100, 19700, 23875, 24625, 25976, 26792, 32470, 33490, 37627, 38200, 39400, 47750, 49250, 64940, 66980, 75254, 81175, 83725, 95500, 98500, 129880, 133960, 150508, 162350, 167450, 188135, 191000, 197000, 301016, 324700, 334900, 376270, 405875, 418625, 639659, 649400, 669800, 752540, 811750, 837250, 940675, 1279318, 1505080, 1623500, 1674500, 1881350, 2558636, 3198295, 3247000, 3349000, 3762700, 4703375, 5117272, 6396590, 7525400, 9406750, 12793180, 15991475, 18813500, 25586360, 31982950, 37627000, 63965900, 79957375, 127931800, 159914750, 319829500, 639659000]

約数ペア:

[(1, 639659000), (2, 319829500), (4, 159914750), (5, 127931800), (8, 79957375), (10, 63965900), (17, 37627000), (20, 31982950), (25, 25586360), (34, 18813500), (40, 15991475), (50, 12793180), (68, 9406750), (85, 7525400), (100, 6396590), (125, 5117272), (136, 4703375), (170, 3762700), (191, 3349000), (197, 3247000), (200, 3198295), (250, 2558636), (340, 1881350), (382, 1674500), (394, 1623500), (425, 1505080), (500, 1279318), (680, 940675), (764, 837250), (788, 811750), (850, 752540), (955, 669800), (985, 649400), (1000, 639659), (1528, 418625), (1576, 405875), (1700, 376270), (1910, 334900), (1970, 324700), (2125, 301016), (3247, 197000), (3349, 191000), (3400, 188135), (3820, 167450), (3940, 162350), (4250, 150508), (4775, 133960), (4925, 129880), (6494, 98500), (6698, 95500), (7640, 83725), (7880, 81175), (8500, 75254), (9550, 66980), (9850, 64940), (12988, 49250), (13396, 47750), (16235, 39400), (16745, 38200), (17000, 37627), (19100, 33490), (19700, 32470), (23875, 26792), (24625, 25976)]